How to be able to upload and choose different youtube quality using Adobe Premiere CS6?

I actually managed to upload an HD quality of my video here. But if you try watching it and change the quality from 480p to 720p or 1080p, the quality remains the same. But if you change it to 240p quality it successfully gets blurry. In short, my 480p/720p/1080p is the same quality.

I use the H.264 and Youtube 1080p when exporting my video from Adobe Premiere CS6.

How can I really export a video that can switch different video quality successfully?